USB WiFi Smart Adapter – But Why?
Given USB is everywhere, this guy gives you the ability to control the on and off power of a USB powered device.
I think for most people, there is no real difference between a WiFi outlet and the WiFi USB adapter. The only difference would be if you want to control the power of a USB gadget which is being powered from your computer. If it’s anything else, as for the power source, it will be a wall outlet.
Can you plug in your Alexa via USB? No. Can you plug in your Google Home via USB? No. Can you plug in your lamps in our family room or living room via USB? No. Can you plug in your bluetooth speaker to charge vai USB? Yes, but who cares about controlling the power of that? Can you plug in your phone via USB to charge it? Yes, but who cares, you want that thing to charge to it’s full capacity anyway. Oh wait, unless you are a super nerd, like these guys (read the comments section).

For the $6.50 that Sonoff is planning to charge you, I would put my money towards a more usable product, like the Smart Life WiFi outlets.
Okay, so we are a bit negative on the USB WiFi outlet and that’s not right. Any consumer should give a company which created the product the benefit of coming up with the idea. It’s not easy to make something others are willing to purchase. There are plenty of reasons and uses to have a WiFi enabled socket to control when something will turn on or off.